Removable horseshoe-calk



(No Model.) I G. BUKOFSKY. REMOVABLE HORSESHOE GALK.

No. 549,227. I Patented NOV. 5, 1895.

UNITED STATES PATENT FFICE.

GEORGE BUKOFSKY, OF CHICAGO, ILLINOIS.

REMOVABLE HORSESHO'E-CALK.

SPECIFICATION forming part of Letters Patent No. 549,227, dated November 5, 1895.

Application filed August 31, 1895.

T0 on whom it may concern.-

Be it known that I, GEORGE BUKOFSKY, a citizen of the United States, residing at Ohic-ago, in the county of Cook and State of Illinois, have invented a certain new, useful, and valuable Improvement in Removable Horseshoe-Oalks, of which the following is a full, clear, and exact description.

My invention has relation to removable horseshoe-calks; and it consists in the novel construction and arrangement of its parts, as hereinafter described.

I11 the accompanying drawings, Figure 1 is a bottom view of a horseshoe, showing the calks attached thereto. Fig. 2 is a detail sectional view of the toe-calk. Figs. 3 and 4 are detail sectional views of two forms of the heel-calk. Fig. 5 is a plan View of a wrench adapted to be used in applying the calks to the shoe. Fig. 6 is a perspective of a plug adapted to be placed in the perforations in the shoe when the calks are not in use.

The shoe 1 is provided with suitable threaded perforations, one at the toe and one in each heel. The toe-calk consists of a central threaded spur 2, the thread extending along the lower part or shank of the said spur, while the head of the said spur may be pointed, as shown in Fig. 2, or it may be blunt. An oblong washer 3, having a central threaded perforation, is screwed on the thread of the spur 2. Said washer 3 is provided on each side with an extension 4 4:, the upper ends of which are flush with the top of the central spur 2 when the calk is in place on the shoe. The extensions 4 4 may be pointed or blunt, as desired.

The calk, as shown in Fig. 2, is applied to the shoe as follows: The washer 3 is screwed on the spur 2 until the washer comes in contact with the lower side of the head of the said spur. Then the threaded shank of the spur 2 is screwed into the threaded perforation of the shoe until the lower side of the washer 3 comes in contact with the surface of the shoe. Then the bifurcated end 5 of the wrench, as shown in Fig. 5, is placed around the washer 3, and the said washer is given a slight turn toward the shoe. The turn of the washer firmly locks the thread of the spur 2 in the thread of the perforation in from.

Serial No. 561,100. (No model.)

the shoe, and thus the washer serves as a nutlook.

If desired, a central spur, as shown in Fig. 3, may be used with the washer, as shown in Fig. 2, the difference between the two spurs being that one is provided with a head that extends beyond the perpendicular sides of the spur, while the other is not.

The modifications, as shown in Figs. 3 and 4, are designed to be used at the heels of the shoe. The spurs used in these modifications may be pointed or blunt, as desired.

The calk, as shown in Fig. 3, is applied by firstscrewing the spur 2 into the threaded perforation of the shoe, and in so doing the socket 6 of the wrench may be used. WVhen the spur is firmly screwed in the perforation of the shoe, the washer 3 is screwed down on the spur 2 from the top until the lower face of the washer comes in contact with the upper surface of the shoe. Then by means of the socket 7 of the wrench the said washer 3 is turned several times. This firmly locks the threads of the spur and the shoe.

The modification, as shown in Fig. 4, is applied to the shoe in the same manner as that described for the toe-calk.

I11 order to remove the calks, the washers must first be unscrewed. Then the spurs can be removed with ease. WVhen the calks are removed, the plug, as shown in Fig. 6, is inserted in the threaded perforations of the shoe, and thus the threads are preserved and protected from rust, (he. The end 8 of the wrench is provided with a screwdl'ivenpoint,

in order to insert the plug in the perforation of the shoe and also to remove the plug there- Thus the bifurcated end of the wrench serves a double purpose.

The difficulty experienced heretofore with calks that were applied to the shoe by using screw-threads has been that the calks would unscrew and fall out and get lost;'also, as the shoe became thinner from use the calks would not fit in close to the surface of the shoe. These objections are avoided by this invention. First, thewasher 3 serves as a nut-lock, and the said washer can at all times be screwed down against the surface of the shoe irrespective of the thickness of the latter.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

In combination with a shoe having a threaded perforation, a removable oalk for the same consisting of a threaded spur adapted to fit in the perforation of the shoe, a threaded washer located on the threaded shank of the spur, extensions located on said washer and being substantially flush with the top of the spur, said Washer adapted when the ealk is 10 applied to the shoe to come in contact with the surface of the shoe, as set forth.

In testimony whereof I afiix my signature in presence of two Witnesses.

GEORGE BUKOFSKY.

Vitnesses:

ADOLPH D. WEINER, DAVID JETZING'ER. 

